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#ifndef __LINUX_UMH_H__ #define __LINUX_UMH_H__ #include <linux/gfp.h> #include <linux/stddef.h> #include <linux/errno.h> #include <linux/compiler.h> #include <linux/workqueue.h> #include <linux/sysctl.h> struct cred; struct file; #define UMH_NO_WAIT 0 /* don't wait at all */ #define UMH_WAIT_EXEC 1 /* wait for the exec, but not the process */ #define UMH_WAIT_PROC 2 /* wait for the process to complete */ #define UMH_KILLABLE 4 /* wait for EXEC/PROC killable */ struct subprocess_info { struct work_struct work; struct completion *complete; const char *path; char **argv; char **envp; struct file *file; int wait; int retval; pid_t pid; int (*init)(struct subprocess_info *info, struct cred *new); void (*cleanup)(struct subprocess_info *info); void *data; } __randomize_layout; extern int call_usermodehelper(const char *path, char **argv, char **envp, int wait); extern struct subprocess_info * call_usermodehelper_setup(const char *path, char **argv, char **envp, gfp_t gfp_mask, int (*init)(struct subprocess_info *info, struct cred *new), void (*cleanup)(struct subprocess_info *), void *data); struct subprocess_info *call_usermodehelper_setup_file(struct file *file, int (*init)(struct subprocess_info *info, struct cred *new), void (*cleanup)(struct subprocess_info *), void *data); struct umh_info { const char *cmdline; struct file *pipe_to_umh; struct file *pipe_from_umh; pid_t pid; }; int fork_usermode_blob(void *data, size_t len, struct umh_info *info); extern int call_usermodehelper_exec(struct subprocess_info *info, int wait); extern struct ctl_table usermodehelper_table[]; enum umh_disable_depth { UMH_ENABLED = 0, UMH_FREEZING, UMH_DISABLED, }; extern int __usermodehelper_disable(enum umh_disable_depth depth); extern void __usermodehelper_set_disable_depth(enum umh_disable_depth depth); static inline int usermodehelper_disable(void) { return __usermodehelper_disable(UMH_DISABLED); } static inline void usermodehelper_enable(void) { __usermodehelper_set_disable_depth(UMH_ENABLED); } extern int usermodehelper_read_trylock(void); extern long usermodehelper_read_lock_wait(long timeout); extern void usermodehelper_read_unlock(void); #endif /* __LINUX_UMH_H__ */